Kaplan is NOT in any way good enough for biology. Yeah, you can start off with it, but don't stop there. Get destroyer and topscore and achiever. Get the GRE biology book. Go over all of those and you'll get 20+ in bio. Promise. Who knows though...maybe you've had a super undergraduate background in bio, and kaplan may be enough for you...but I wouldn't chance it. Good luck to you!! 🙂